File size: 4,391 Bytes
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import (
"encoding/json"
"io"
"os"
"path/filepath"
"strings"
"testing"
)
func TestInit_DualOutput(t *testing.T) {
tmpDir := t.TempDir()
logPath := filepath.Join(tmpDir, "logs", "sub2api.log")
origStdout := os.Stdout
origStderr := os.Stderr
stdoutR, stdoutW, err := os.Pipe()
if err != nil {
t.Fatalf("create stdout pipe: %v", err)
}
stderrR, stderrW, err := os.Pipe()
if err != nil {
t.Fatalf("create stderr pipe: %v", err)
}
os.Stdout = stdoutW
os.Stderr = stderrW
t.Cleanup(func() {
os.Stdout = origStdout
os.Stderr = origStderr
_ = stdoutR.Close()
_ = stderrR.Close()
_ = stdoutW.Close()
_ = stderrW.Close()
})
err = Init(InitOptions{
Level: "debug",
Format: "json",
ServiceName: "sub2api",
Environment: "test",
Output: OutputOptions{
ToStdout: true,
ToFile: true,
FilePath: logPath,
},
Rotation: RotationOptions{
MaxSizeMB: 10,
MaxBackups: 2,
MaxAgeDays: 1,
},
Sampling: SamplingOptions{Enabled: false},
})
if err != nil {
t.Fatalf("Init() error: %v", err)
}
L().Info("dual-output-info")
L().Warn("dual-output-warn")
Sync()
_ = stdoutW.Close()
_ = stderrW.Close()
stdoutBytes, _ := io.ReadAll(stdoutR)
stderrBytes, _ := io.ReadAll(stderrR)
stdoutText := string(stdoutBytes)
stderrText := string(stderrBytes)
if !strings.Contains(stdoutText, "dual-output-info") {
t.Fatalf("stdout missing info log: %s", stdoutText)
}
if !strings.Contains(stderrText, "dual-output-warn") {
t.Fatalf("stderr missing warn log: %s", stderrText)
}
fileBytes, err := os.ReadFile(logPath)
if err != nil {
t.Fatalf("read log file: %v", err)
}
fileText := string(fileBytes)
if !strings.Contains(fileText, "dual-output-info") || !strings.Contains(fileText, "dual-output-warn") {
t.Fatalf("file missing logs: %s", fileText)
}
}
func TestInit_FileOutputFailureDowngrade(t *testing.T) {
origStdout := os.Stdout
origStderr := os.Stderr
_, stdoutW, err := os.Pipe()
if err != nil {
t.Fatalf("create stdout pipe: %v", err)
}
stderrR, stderrW, err := os.Pipe()
if err != nil {
t.Fatalf("create stderr pipe: %v", err)
}
os.Stdout = stdoutW
os.Stderr = stderrW
t.Cleanup(func() {
os.Stdout = origStdout
os.Stderr = origStderr
_ = stdoutW.Close()
_ = stderrR.Close()
_ = stderrW.Close()
})
err = Init(InitOptions{
Level: "info",
Format: "json",
Output: OutputOptions{
ToStdout: true,
ToFile: true,
FilePath: filepath.Join(os.DevNull, "logs", "sub2api.log"),
},
Rotation: RotationOptions{
MaxSizeMB: 10,
MaxBackups: 1,
MaxAgeDays: 1,
},
})
if err != nil {
t.Fatalf("Init() should downgrade instead of failing, got: %v", err)
}
_ = stderrW.Close()
stderrBytes, _ := io.ReadAll(stderrR)
if !strings.Contains(string(stderrBytes), "日志文件输出初始化失败") {
t.Fatalf("stderr should contain fallback warning, got: %s", string(stderrBytes))
}
}
func TestInit_CallerShouldPointToCallsite(t *testing.T) {
origStdout := os.Stdout
origStderr := os.Stderr
stdoutR, stdoutW, err := os.Pipe()
if err != nil {
t.Fatalf("create stdout pipe: %v", err)
}
_, stderrW, err := os.Pipe()
if err != nil {
t.Fatalf("create stderr pipe: %v", err)
}
os.Stdout = stdoutW
os.Stderr = stderrW
t.Cleanup(func() {
os.Stdout = origStdout
os.Stderr = origStderr
_ = stdoutR.Close()
_ = stdoutW.Close()
_ = stderrW.Close()
})
if err := Init(InitOptions{
Level: "info",
Format: "json",
ServiceName: "sub2api",
Environment: "test",
Caller: true,
Output: OutputOptions{
ToStdout: true,
ToFile: false,
},
Sampling: SamplingOptions{Enabled: false},
}); err != nil {
t.Fatalf("Init() error: %v", err)
}
L().Info("caller-check")
Sync()
_ = stdoutW.Close()
logBytes, _ := io.ReadAll(stdoutR)
var line string
for _, item := range strings.Split(string(logBytes), "\n") {
if strings.Contains(item, "caller-check") {
line = item
break
}
}
if line == "" {
t.Fatalf("log output missing caller-check: %s", string(logBytes))
}
var payload map[string]any
if err := json.Unmarshal([]byte(line), &payload); err != nil {
t.Fatalf("parse log json failed: %v, line=%s", err, line)
}
caller, _ := payload["caller"].(string)
if !strings.Contains(caller, "logger_test.go:") {
t.Fatalf("caller should point to this test file, got: %s", caller)
}
}
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